So checked most of the things everyone has said , just wondering on the rear pump apparently there 2 switches or solinoids is one telling to pump the fluid and the other to release the pressure ? And trying to bring up a code but couldn't get one for the 4wd , some one said you had to plug it in somewhere in the boot to bring up the 4wd , does anyone know of this it's doing my head in , if there is someone in bris that knows a shit load about this please let me know , cheers guys